What is the difference between GSTR-1 and GSTR-3B?

GSTR-1 is a detail return for reporting outward supplies invoice-by-invoice, while GSTR-3B is a summary return for declaring total tax liability and paying GST. GSTR-1 has no tax payment; GSTR-3B does.

Can GSTR-3B be filed without GSTR-1?

Yes, technically GSTR-3B can be filed independently. However, if GSTR-1 is not filed, your buyers cannot claim Input Tax Credit, and you may face notices. Both returns are practically interdependent.

Yes, GSTR-1 is mandatory for all regular GST-registered taxpayers. Failure to file attracts late fees and can block your GSTR-1 filing in subsequent months if GSTR-3B is also not filed.

What happens if GSTR-1 and GSTR-3B mismatch?

A mismatch between GSTR-1 and GSTR-3B can trigger GST scrutiny notices, tax demands for the difference, interest at 18% per annum, and ITC issues for your buyers.

Which return contains invoice details?

GSTR-1 contains invoice-level details including buyer GSTIN, invoice number, date, taxable value, HSN code, and tax amounts. GSTR-3B contains only consolidated summary figures.

Can I revise GSTR-1 or GSTR-3B?

GSTR-1 can be amended in the next period's filing via GSTR-1A. GSTR-3B cannot be revised directly — any corrections must be incorporated in the following month's GSTR-3B filing.GSTR-1 can be amended within the same tax period using GSTR-1A — introduced under Section 37A of the CGST Act (operative from July 2024). GSTR-1A must be filed after GSTR-1 is submitted but strictly before GSTR-3B for that period is filed; once GSTR-3B is filed, GSTR-1A for that period is no longer available. The amended data flows into the recipient’s GSTR-2B in the same period, enabling timely ITC correction. GSTR-3B cannot be revised directly — any corrections must be incorporated in the following month’s GSTR-3B filing.

Who should file a nil return?

Any GST-registered taxpayer who had no business activity (no sales and no purchases) in a period must file a nil GSTR-1 and nil GSTR-3B. Skipping the nil return attracts late fees.

Is GSTR-3B a monthly return?

For taxpayers with annual turnover above ₹5 crore, GSTR-3B is a monthly return. Taxpayers under the QRMP scheme with turnover up to ₹5 crore file GSTR-3B quarterly.

What is outward supplies in GST?

Outward supplies means all goods and services sold or transferred by a GST-registered business. These are reported in GSTR-1 and summarised in GSTR-3B Table 3.1.

Which GST return is used for tax payment?

GSTR-3B is the return used for declaring and paying GST. You calculate your net tax liability (output tax minus eligible ITC) and pay the balance in cash through the GST portal while filing GSTR-3B.

GSTR-1 vs GSTR-3B: Key Differences Explained (2026)

StartBusiness

Get Free Consultation

GSTR-1 vs GSTR-3B: Key Differences Explained (2026) | StartBusiness